Why you need this active balancer Keeps multi-cell lithium packs balanced for longer runtime and safer operation Works with both ternary polymer-lithium and lithium-iron-phosphate chemistries, so one module fits multiple battery types Reduces cell stress and extends pack life with efficient energy transfer and precise voltage control Key benefits at a glance Broad compatibility: designed specifically for ternary polymer-lithium batteries and lithium-iron-phosphate batteries Efficient energy transfer: flying capacitor transfer topology provides fast, low-loss cell-to-cell balancing Low resistance and robust conductors: ultra-low internal resistance and 57 g copper thickness for reliable current flow Precise balancing: voltage accuracy within 5 mV ensures tight cell matching Flexible balance current: 0–5.5 A capability, optimized for effective balancing even at lower currents Battery protection sleep mode: automatic low-power sleep when the B1 section voltage falls below 7 V; standby current < 0.1 mA to protect battery health What it does and how it stands out Function: actively moves charge between cells using a flying-capacitor transfer method rather than simple resistive bleed, increasing energy efficiency and reducing heat Compatibility: supports the two common lithium chemistries listed, enabling use across different pack types without changing hardware Performance: supports a wide working voltage range (7 V–4.2 V) and delivers accurate balancing (within 5 mV) while supplying up to 5.5 A when needed Durability: built with low internal resistance and heavier copper conductors (57 g) to maintain stable performance under load Practical applications / example use cases DIY battery packs: integrate into custom multi-cell packs to maintain long-term balance and prolong usable life Portable energy systems: use in small off-grid or backup power packs where efficient cell balancing and low standby drain are important Mobility and power tools: improve consistency and safety in e-bikes, scooters, or other battery-powered devices that use ternary polymer-lithium or LiFePO4 cells Important specifications (concise) Compatible chemistries: ternary polymer-lithium batteries and lithium-iron-phosphate batteries Working voltage range: 7 V–4.2 V Balance current: 0–5.5 A (designed for effective low-current balancing) Voltage accuracy: within 5 mV Conduction/build: ultra-low internal resistance, 57 g copper thickness Sleep/protection: enters low-power sleep when B1 section voltage < 7 V; standby < 0.1 mA This active equalizer is designed to deliver precise, efficient balancing across compatible lithium battery packs while minimizing standby drain and protecting battery health.